Type-writing machine.



,V. STERN. TYPE WRITING-MACHINE. APPLICATION IILED DEC. 23, 1911.

Patented Apr. 22, 1913.

2 SHEETS-SHEET l.

'HEATTURNEY INVENTUR v. STERN. TYPE WRITING MACHINE.

APPLIOLA'IFION FILED DEC. 23, 1911.

Patented A r.22,1913.

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vAsILrsrnaN, on Moscow, RUSSiA, ASSIGNOR, BY MEsNEAssmNMEN'rs, TOREMINGTON TYPEWRITER- COMPANY, or ILION, NEW YORK, A CORPORATION OF NEWYORK.

TYPE-WRITING MAcHiNE.

Patented Apr. 22, 1913.

Application filed December 23, 1911. Serial No. 667,505.

T ail-whom- 66 may concern:

Be it known that I, VASILI STERN, a sub- 1 ject of the Emperor ofRussia, and resident ofGreat Ardynka 7, Moscow, in the Government ofMoscow and Empire of Russia, have invented certain new and usefulImprovements in Type-VVriting Machines, of which the following isaspecification. 1

My invention relates to type arresting mechanism for typewritingmachines andits general object is to provide new and improved mechanismof the character speci- To the above and other ends my inventionconsists in the features of construction, combinations of devices andarrangements of parts hereinafter described and particularly pointed outin the claims.

My invention is particularly adapted for use in conn'ectionwithtypewriting machines wherein the type bars each are provided with aplurality of types, in which case it frequently happens that one of thetype characters is a punctuation mark such as a period while the othercharacter or other characters on the same type bar are figures orletters having much greater printing area or surface. In the case of aperiod it is desirable to stop the type bar, or a part of its actuatingmechanism, by some sort of arresting device, prior to the engagement ofthe period with the paper, so as to prevent the period from deeplyindenting or puncturing'the paper as it otherwise would "be apt to do.Such arresting or stop device would, however, be undesirable inconnection with the other type character orcharacters on thc'same typebar with the period as it would be likely to prevent a proper depth ofimpression being obtained from such other character or characters.Accordingly my present invention provides an arresting or stop devicewhich is in use when the period or punctuation character is beingemployed but isthrown out of use or ren ,parts in differentrelationships from those in which they appear in said Fig. 1.

As appears from Fig. 1, the main frame of the'machine comprises a base1, posts 2 and a to plate 3. b'upported on the uoper part of the mainframe are fixed track-ways 4 and 5 which are grooved to receiveantifriction rollers 6, said rollers providing bearings for the frontand rear bars 7 and S of a 'arriage truck which further includes uprightend bars 9 connected by links 10 with the end bars 11 of a platen frameor carrier which further comprises connecting rods 12 and 13. Saidplaten frame provides bearings for a cylindrical platen 1% which, withthe platen frame. is shiftable up and down on the truck to change caseby devices which include a roller 15 adapted to run 011 a shift rail 16supported near its ends on a pair of vertical arms 17, said arms beingpivotally connected at their lower ends at 18 to shift levers 19. Thereare two levers 19 one rigidly secured near each end of a rock shaft 20journaled in the sides of the base, the lovers 19 terminatingat theirforward ends in vertical extensions which are pro-.

upper case types. This shifting movement takes place without disturbingthe carriage truck; but during prlntlng movements the truck and theplaten frame, which together constitute the platen carriage, moveendwise toward the left .as one member, the platen being thus adapted totravel on and with the carriage comprising said truck and said frame forthe purpose of spacing between letters or characters. The printingdevices comprise printing key levers 23 each provided with a printingkey 24 and-fulcrumed on a fixed fulcrum rod 25. Each key lever has anenlargement nearits forward end, the under face or edge '26 whereof isprimarily adapted to cooperate with a line locking bar, not shownherein. As will be observed from Fig. 1, the usual front guide comb 27is so located that its tines or teeth 28 cooperate with the sides of theenlargements on the key levers. Each key lever 23 is connected bydevices comprising a link 29, abell crank 30, a second link 3i and asecond bell crank 32 with a type bar 33 which is furthermore pivotallysupported. and'guided b a third link Each type bar is provi ed at itsfree end with atype block 35 having two types, a lowercase type 36 andan upper case type 37, said types normally resting against the face of acurved inking pad 38. When'one of the printingkeys 24 is suit:

ably actuated, it o erates through the associate key lever'23, ink 29,bell crank 30, link 31 and bell crank 82 to actuate the connected typebar 33 and cause the lower case type 36 thereon to cooperate with thefront face of the platen 14, said type following the path indicated bythe dotted line 32 in Fig. l.-

When, however, one of the shift keys 21 is operated to raise the platento upper case position the upper case type 37 will cotiperate with theplaten and the paper thereon.

It has not been deemed necessary to describe the parts hereinbeforereferred to at great lengthsince they are common to the I Yost visiblemachine and do not in themselves constitute my present invention. The

- tegral-with the base 1 (Figs. 1 and 2).

'to by set screws .43. a ts 1 i 45 of; a: rock shaft 46, said rock shaftin turn 4 '55 parts with which said invention is more particularlyconcerned are detacha'bly support ed on an angular bar 39 which extendsfrom supporting the arresting stops forthe type actuatingmechanism.These arresting de vices or stops proper in the present instance arescrews 47 each provided-"with asquared head and a threaded shank whichscrews vertically downward'in a tapped o ening in the rock shaft 46; Acheck or ice ing nut '48'co6p'erates with each screw stop 47- andproyides means for permitting the etc to be adjitstably secured at theproper heig t for.

coiip'eration wit. the particularkey lever which said stop underlies. Asshown clearly in Fig. 3, the nuts 48 engage slight depres' sions orseats in the top of the rock shat-46,

VVhileaonly one stop device arm 's-e 8111- ployed, I have shown threesuch in the present instance, and of course the number. maybe varied asdesired; These three stops considered from left to right valong the stopbarter rock shaft 36 are designed for use in connection with the colon,period and comma keys," respectively, these keys being in turn connectedwith the'type oars which respectively print the colon, period and commain lower case. The square heads of the stops 47 normally underlie theassociate key levers 23 and are in the path of the' edges 26 on said keylevers, the comb teeth 28 insuring that these ed es shall not bedeflected" sidewise but shall strike squarely on the screw heads. 7

Connections areprovided between the rock shaft 46 and the case shiftingmechanism of the machine, said connections comprising an angular arm ordevice49 which at its righthand end is threaded, as indicated at 50, toengage in a horizontal tapped opening in the left-hand end portion ofthe rock shaft 46. A check nut 51 coeperates with the threaded end 50 tosecure the arm 49 fixedly to the rock shaft 6. The construction providesfor adjusting the arm 49 with respect to the rock shaft, thus variablyadjusting' the connections between the'arresting stops and theplatenshifting means. The arm 49 pro ects forward from the rock shaft and isthen bent or off-set laterally outward or toward the left and from theend of the ofiset portion is bent vertically upward, the free end ofthis upwardly bent portion being rounded to provide anose 52 which un-,derlies the left-hand shift key lever 19 and is adapted to slidablycooperate therewith when said lever is depressed. Normally the nose 52is maintained in contact withthe under edge or face of said shift leverby a spr1ng'53 which is coiled around the ex tension 45 atthe left ofthe rock shaft and projects forward at one end toengage in a hole 54 inthe offset portionof the arIn %l9f The other end of the spring is hookedover the horizontal lip of the bar 39. The spring 53 serves as arestoring spring for the rock;

shaft and stop devices thereon; and alsoas a positioning device for saidstop devices, since the spring normally maintains thenose 52 engagedwith the shift leverl9 thusdetermines the normal position of the stops1-7. v

The arresting devices'f'or'"stops-i4? are so ad usted that when"onecfthe associate,

key levers 23 is'operated in lower cassposig tionthe stop device or edge26 on said actu: ated key lever will cooperate with. thelstoii 47,- as'shown hyithe dotted lines in Fig, 1 33 e' c'onnected'typeibar and typewhich instant, t

. meral 7 the 7 of course being the upper block will be in. the lines inFig. 1 tions and resiliency of the parts enables the lower case type 36to. move forward under the momentum it has acquired to the platen andprint, however, after the connected key lever has been positivelyarrested as shown. The arresting position illustrated by the dottedlines has been found'by me to be most satisfactory in practice but ofcourse if variation be desired this be readily effected by adjusting thestop 47. By lowering the normal position of the stop, the lower casetype, assuming the same to be the period type, will give a deeperimpression than would be given by the adjustment shown in Fig. l, and ofcourse a lighter impression will be obtained by aising the normalposition of the stop 47.

As will be observed from Fig. 3, the period type in the machine shownherein is associated on 'the type block with the nuposition shown bydotted case type and the period the lower case type. To obtain the bestin'ipression from the 7 or upper case type it is desirable that the typeshould strike the platen without its actuating mechanism being arrestedby the stop device 47, and accordingly by reason of the connectionsincluding the arm 49 the stop 47 will be automatically rendered in?operative when the upper case or 7 type is broughtinto use. This willbe'clearly apparent from a consideration of Fig. 4 which shows theplaten in shiftod or upper case )osition. and the t )e bar in rintin lposition. From a comparison of Figs, 1 and i it will be understood thatwhen the platen is shifted by depressing one of the keys 21 theleft-hand key lever 19 will tie press the nose and the arm 49 and willswing the rock shaft to Forward until the heads of the stops 47 thereoncle..r or are swung forward out of the path of the associate stopdevices 26 on the key levers 2i. iccordingly it now any one of the keylevers 23. including those associated with stops 47, be depressed, itwill swing downward freely and will not be arrested until,

the connected type bar strikes with its upper case type against thefront face of the platen or the paper thereon. This tree andi-mobstructed movement of the type bars will continue at printingoieration so long as the platen shitting mech uism maintains the platenin upper case position. The letthand shift lever 19 is preferablyassociated with the usual or other suitable shift locking devicescomprising a spring-pressed lever pivoted at 56 to the .lett-hand leverif) and provided at its upper end with a. locking ltev 57; the lower endof said lever terminating in a book 59 which is adapted to cooperatewith a fixed abutment 59 as shown in Fig. t to lock the platen in upperThe looseness in the oonneccase position. It will be apparent that thelocking devices 55 and 59 also provide means for locking the stops 47out of operation, as shown inv said Fig. 4. On releasing the shiftdockkey 57, the platen shifting mechanism will be restored to the Fig. 1position; and the stop mechanism including the stops 4E7, stop carrieror rock shaft 46 and connecting armstt) will concurrently be autonot beinterfered with; but if necessary said stops will yield slightly to saidline locking bar.

It will be observed that by my present invention I provide incombination a platen, type actuating mechanism, a stop therefor,

type varying mechanism (in the present case, platen shifting mechanism)and con-.

necting means between said'varying mechanism and said stop that a keyoperated type bar provided with two types is combined with a stop forone only of said types; that means are provided for moving said stop outof use when the other type is broughtinto use; that said means isoperative automatically by thecase shifting mechanism; that a 'stop isprovided cooperative with type actuating mechanism in combination withmeans for moving said stop into and out of operative position; that saidmeans operates automatically; that the automatic operation is efi'ectedin the present instance through connections with the case shiftingmechanism; that said connections may be adjusted to vary the action ofthe case-shifting mechanism on the stop or stops; that astop cooperateswith certain of the type bar actuating devices in the present instance,the type bar key lever) to limit the movement of the type bar toward theplaten, said stop being normally in' the path of the key lever; thatmeans are provided for moving the stop out of the-path of the key lever;that the stop mechanism embodies means that acts to subdue, soften orregulate the impression of one type on a bar, leaving the other type ortypes un affected when they are moved to print, the stop thus providinga print subduing or print moderating or regulating means which may berendered operative or inoperative at each and all letter space positionsof the traveling platen; that locking means are provided which lock thetype arresting stop out of operation; that the stop is adjus able on asupport or carrier to vary its'nori'ual position; and that a pluralityof stops (in the present instaneethree'} are. mounted on the,carr1er,..ell of the stops being moved simultaneously into and' ontioto eration bythe movement forthe) stopsupport o1' car-' rier, which inthe present instance is a rock shafti oontrolled from the platenshifting mechanism oi the machine.

Various 'chang 5 may he made Without departing from the spirit and scopeof my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machinmtho combination of a traveling platen, a setof-independently operative type actuating mechanisms, a print-regulatingstop effective on one only of said mechanisms, and means operative atall positions of the traveling platen for moving said stop into and outof operative position.

- 2. In atypewriting machine, the combination of a traveling platen, aset of independ ently operative type actiiating mechanisms, aprint-regulatingstop effective on one only of said mechanisms, and meansoperative automatically at all positions of the travel- -ing platen tomove said stop into and out of operative position.

3. In a typewriting machine, the combination of a platen, a set ofindependent type actuating, mechanisms, stops coiiperative with certainselected ones only'of said mechanisms, there being a single step foreach of said selected mechanisms, case shifting .devices, and meansconnected to said devices for controlling all of said stops.

l, In a typewriting machine, the combination of a platen, type actuatingmechanism, a stop for said mechanism normally in op- ,erative position,case shifting mechanism, and means cont-rolled by said case shiftingmechanism for moving said stop automatically out of operative position.

5; In a typewriting machine, the combination of a traveling platen, aset of type bars, trains of actuating devices, one for each of said typebars, a print-regulating stop cooperative with a selected train ofdevices to limit the movement of the-associate type bar ,toward theplaten without afiecting the other type bars, and means operative at allpositions of the traveling platen for moving said stop into and out ofoperative position.

6. In a typewriting machine, the combination of a platen, a type bar,actuating de-' vices therefor, a stop coiiperative with certain of saidactuating devices to limit the movement of said type bar toward vtheplaten, case shifting mechanism, and means automatically operatedby saidcase shifting mechanism or. moving said stopout Idioperaztive-pcsition.

7 7,. Ina ty rewriting machine, the combinanan eifiwpaten, etype her,actuating (19 ".vicesithereinr, a stop coperative withany tain of saidactuating devices to limit the movement of said type bar toward the 9.In a typewriting machine,the combination of a platen, a type bar, a keylever,

connections between said type car and said key lever, a stop normally inthe path of said key levcr, case shifting mechanism, and means connectedtosaid case shifting mechanism for moving said stop out of the path ofsaid key lever,

10. In aty ewriting machine, the combination of a p aten, a type bar, akey lever, connections between said type bar and key lever, a stopnormally in the path said key lever, key controlled platen shiftingmechanism, and means operative by the shift key for moving said stop outof the path of said key lever. A

11. In a typewriting machine, the combination of a platen, a type bar, akey lever, connections between said type bar and said key lever, a stopnormally in the path of said key lever, said stop being pivotallysupported on the frame of the machine, key controlled case shiftingmechanism, and devices connected to the shift key for turn-.

actuating devices therefor, a plurality of stops normally limiting themovement of said type blocks toward the platen, and key operated meansfor'moving said stops out of operative position.

13. In a typeWrit-ing machine, the combination of a platen, a pluralityof type bars,

key levers connected, to said type bars, a

plurality of stops, one normally in the path of each of said key levers,and means for moving said stops out ofoperative position.

14. In a typewriting machine, the combination of a traveling platen,type actuating its mechanism, a rock shaft, a print-regulating.

stop for said type actuating mechanism mounted on said rock shaftnormally effective, and-means operative at all positions of thetraveling platen for turning said shaft to move said step out ofoperative position.

15. In atypewriting machine, the combination of a, platen, a pluralityof type actuat-ing mechanisms, a rock shaft, separate stops one for eachof said"type' actuatinginechanisms, said stopsbeing mounted on "saidreel-t shaft, and kay'eontrolled means for nation of a platen, a p

turning said shaft to set said stops in and out of operative position.-

16. In a typewriting machine, the combination of a platen, a pluralityof type bars, key levers connected to said type bars, a rock shaft,stops on said shaft normally in the path of said key levers, and meansfor turning said shaft to move said stops out of the paths of said keylevers.

17. In a typewriting machine, the combination of a platen, a pluralityof type bars, key levers connected to said type bars, a rock shaft,stops on said shaft normally in the path of said key levers, a caseshifting key, and connections between said key and said rock shaft.

18. In a front-strike typewriting machine, the combination ofa-plurality of type bars, a plurality of key levers one connected toeach type bar, a rock shaft underlying said key levers, stops projectingfrom said rock shaft into the path of said key levers, case shiftingdevices, and connections between said case shifting devices and saidrock shaft.

19. In a typewriting machine, the combination of a platen, typeactuating mechanism, a stop cooperative with said mechanism, said stopbeing normally in position to cooperate with said mechanism when thesame is actuated, means for moving said ing means for affordingvariation of the normal position of said stop.

20. In a front strike typewriting machine, the combination of aplurality of type bars,

aplurality of key levers one connected to each type bar, a rock shaftunderlying said key levers, stops projecting from said rock shaft intothe path of said key levers,- case shifting devices, connections betweensaid case shifting devices and said rock shaft, and devices foraffording variation of the normal position of said stops on said rockshaft. v 21. In a typewriting machine, the combiurality of type bars, aplurality of key levers, one connected to each type bar, a rock shaftunderlying said key levers stops projecting from said rock shaft intothe path of said key levers, case shift-- ing devices. including a shiftkey lever, an arm fixed to said rock shaft and underlying said shift keylever, and a spring for maintaining said arm in contact with said lever.

22. In a typewriting machine, the ,combi-, nation of a platen, aplurality of type bars, key levers connected to saidtype bars, a-

rock shaft, stops 011 said shaft and-normally in the path of said keylevers, a key, constop out of operative position, and adjust nectionsbetween said key and said rock shaft, and adjusting means for affordingariation in said connections.

In a typewriting machine, the combination of a platen, type actuatingmechaplaten, means for moving said stop out of operative position, andreleasable locklng means for thereafter locking said stop against returnmovement.

25. In a typewriting machine, the combination of a platen, typeactuating mechanism, a stop normally adapted to cooperate with saidmechanism, case shifting mechanism, means connected to said caseshifting mechanism for moving said stop out of op. eration, and meansfor locking said stop after it has been so moved out of operativeposition.

26. In a typewriting machine, the combination of a platen, separate typeactuating mechanisms, stops, one for each of saidmechanisms, typevarying mechanism, and connecting means between said varying mechanismand said stops.

In a typewriting machine, tl1e combination of a platen, types, keycontrolled actuating mechanism forsaid types, means for affordingstoppage of certain only of said types in theirmovement towardtheplaten, type varying mechanism, and connections between said varyingmechanism and said means.

28. In a typewriting machine. the combifia-tion of a platen, akey ope'ated type bar provided with two types, and a stop for one only of saidtypes.

29. In a typewriting machine, the combination of a platen. a keyoperated type bar of December, A. D. 1911.

VASILI STERN.

Witnesses RIPLEY \ViLsox, \YoLr ARI-REHAB.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents.

7 Washington, D. O.

